在运行Visual Studio Pro 2013 12.0.21005.1的构建计算机上，我有一个单元测试项目无法正确读取其App.config文件（如果有的话）。以下命令返回null：
System.Configuration.ConfigurationManager.GetSection( "loggingConfiguration" )
不仅仅是日志配置部分无法读取;任何读取任何部分的尝试都会产生空值。
在运行Visual Studio Pro 2013 12.0.31101.00 Update 4的笔记本电脑上，单元测试项目读取App.config就好了，上面的调用返回了预期的对象。
我的XML看起来像这样：
<?xml version="1.0"?>
<configuration>
<configSections>
<section name="loggingConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.LoggingSettings, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
<section name="exceptionHandling" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Configuration.ExceptionHandlingSettings, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
<section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" />
<section name="dataCacheClient" type="Microsoft.ApplicationServer.Caching.DataCacheClientSection, Microsoft.ApplicationServer.Caching.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="true" />
</configSections>
<loggingConfiguration name="" tracingEnabled="false" defaultCategory="Verbose" logWarningsWhenNoCategoriesMatch="false">
<listeners>
<add name="Event Log Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.FormattedEventLogTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.FormattedEventLogTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" source="MyCompany" formatter="Text Formatter" log="Application" />
<add name="Rolling Flat File Listener" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" fileName="Service.log" formatter="Text Formatter" rollFileExistsBehavior="Increment" rollInterval="Day" />
<add listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.CustomTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" type="MyCompany.Core.Instrumentation.ConsoleTraceListener, MyCompany.Core" formatter="Debug Formatter" traceOutputOptions="None" name="Debug Console Listener" />
</listeners>
<formatters>
<add type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" template="Timestamp: {timestamp(local)}{newline}
Title: {title}{newline}
Message: {message}{newline}
Severity: {severity}{newline}
Priority: {priority}{newline}
Categories: {category}{newline}
EventId: {eventid}{newline}
Machine: {localMachine}{newline}
ProcessId: {localProcessId}{newline}
Process Name: {localProcessName}{newline}
Win32 ThreadId:{win32ThreadId}{newline}
Thread Name: {threadName}{newline}
Extended Properties: {dictionary({key} - {value}{newline})}" name="Text Formatter" />
<add type="Microsoft.Practices.EnterpriseLibrary.Logging.Formatters.TextFormatter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" template="{timestamp(local:FixedFormatUSDate)} {timestamp(local:FixedFormatTime)} [{severity} P{priority} T{win32ThreadId}/'{threadName}'] {title}: {message} [{category}]" name="Debug Formatter" />
</formatters>
<logFilters>
<add type="Microsoft.Practices.EnterpriseLibrary.Logging.Filters.CategoryFilter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" categoryFilterMode="AllowAllExceptDenied" name="Category Filter">
<categoryFilters>
</categoryFilters>
</add>
<add type="Microsoft.Practices.EnterpriseLibrary.Logging.Filters.PriorityFilter, Microsoft.Practices.EnterpriseLibrary.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" maximumPriority="4" name="Priority Filter" />
</logFilters>
<categorySources>
<add switchValue="Information" name="MyCompany.Core.Configuration">
<listeners>
<add name="Event Log Listener" />
<add name="Rolling Flat File Listener" />
<add name="Debug Console Listener" />
</listeners>
</add>
<add switchValue="All" name="ServiceExceptionPolicy">
<listeners>
<add name="Event Log Listener" />
<add name="Rolling Flat File Listener" />
<add name="Debug Console Listener" />
</listeners>
</add>
<add switchValue="All" name="Critical">
<listeners>
<add name="Event Log Listener" />
<add name="Rolling Flat File Listener" />
<add name="Debug Console Listener" />
</listeners>
</add>
<add switchValue="All" name="Error">
<listeners>
<add name="Event Log Listener" />
<add name="Rolling Flat File Listener" />
<add name="Debug Console Listener" />
</listeners>
</add>
<add switchValue="All" name="Warning">
<listeners>
<add name="Event Log Listener" />
<add name="Rolling Flat File Listener" />
<add name="Debug Console Listener" />
</listeners>
</add>
<add switchValue="All" name="Information">
<listeners>
<add name="Event Log Listener" />
<add name="Rolling Flat File Listener" />
<add name="Debug Console Listener" />
</listeners>
</add>
<add switchValue="All" name="Verbose">
<listeners>
<add name="Rolling Flat File Listener" />
<add name="Debug Console Listener" />
</listeners>
</add>
</categorySources>
<specialSources>
<allEvents switchValue="Off" name="All Events" />
<notProcessed switchValue="Off" name="Unprocessed Category" />
<errors switchValue="All" name="Logging Errors & Warnings">
<listeners>
<add name="Rolling Flat File Listener" />
<add name="Debug Console Listener" />
</listeners>
</errors>
</specialSources>
</loggingConfiguration>
<exceptionHandling>
<exceptionPolicies>
<add name="ServiceExceptionPolicy">
<exceptionTypes>
<add name="All Exceptions" type="System.Exception, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" postHandlingAction="ThrowNewException">
<exceptionHandlers>
<add name="Logging Exception Handler" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging.LoggingExceptionHandler, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Logging, Version=5.0.414.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" logCategory="ServiceExceptionPolicy" eventId="100" severity="Error" title="Enterprise Library Exception Handling" formatterType="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.TextExceptionFormatter, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling" priority="0" />
</exceptionHandlers>
</add>
</exceptionTypes>
</add>
</exceptionPolicies>
</exceptionHandling>
<dataConfiguration defaultDatabase="SOMEDATABASE" />
<connectionStrings>
<!-- some connection strings -->
</connectionStrings>
</configuration>
任何人都知道这会在一个环境中失败而在另一个环境中失败吗？